That leaves just one team, the Miami Heat. Miami is the perfect spot for Allen to continue his career as a sixth-man. Coming off a championship season, the Heat are looking to add even more offensive weapons.

The Heat give Allen the best chance for another ring—something he dearly wants to solidify his Hall of Fame career. Miami also offers the situation with the least amount of pressure on Allen. On a team with LeBron James, Dwyane Wade and Chris Bosh, Allen will find himself as the fourth or fifth option. This will result in even more open jump shots for the NBA's all-time leading three-point shooter.

Going to Miami could also help extend Allen's career. With James and Wade locking down the opposing team's best perimeter player, Allen will be guarding the spot-up shooter or weakest offensive player, resulting in less wear-and-tear on his aging body.

If Allen were to join Miami, he would immediately step into the role of sixth-man. He would likely be on the court in crunch time as he is one of the deadliest three-point shooters in NBA history.

While the Heat can only offer Allen a mini mid-level exception—about $3 million—the lure of championship possibilities and significant playing time should be enough to woo the 16-year veteran.